package cn.nju.zyy.persistence;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {
	
	private static final SessionFactory sessionFactory;
	static {
		try {
			sessionFactory = new Configuration()
									.configure()
									.buildSessionFactory();
		} catch (Throwable e) {
			System.err.println("Initial SessionFactory creation failed." + e);
			throw new ExceptionInInitializerError(e);
		}
	}
	
	public static SessionFactory getSessionFactory() {
		// Alternatively, you could look up in JNDI here
		return sessionFactory;
	}

	public static void shutdown() {
		// Close caches and connection pools
		getSessionFactory().close();
	}

}
